Info

Cette question est clôturée. Rouvrir pour modifier ou répondre.

Best method to be implimented

4 vues (au cours des 30 derniers jours)
Dimitrios
Dimitrios le 17 Sep 2014
Clôturé : MATLAB Answer Bot le 20 Août 2021
Having a couple of equations inside a function. This function has an output.This output is again an input in the same equation until the tolerence between the tolerence between last output and previous output have a certain value like 10e-4. This could be implimented with a while loop. Something like this i guess (still I didnt impliment it in MATLAB) :
y = 1
x= = fun(y)
while (y-x)>10e-4
y=x
x = fun(y)
end
Is there any other way?
  1 commentaire
Guillaume
Guillaume le 17 Sep 2014
The code you've shown will do what you've described and is probably the simplest.
The issue with your code and what you've described is that it may never converge (e.g. if fun(x) = -x), so rather what don't you say what you're trying to achieve.

Réponses (1)

Matt J
Matt J le 17 Sep 2014
If fun(x) is continuous wrt x and the iterations you describe do converge to something, then the limit will satisfy
x=fun(x)
which you can solve with fzero
fzero(@(x) x-fun(x), x0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by